package thread;

import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class ThreadPoolDemo {
    public static void main(String[] args) {
        ExecutorService threadPool = Executors.newFixedThreadPool(3);
        for (int i = 0; i < 5; i++) {
            Runnable r=()->{


                    try {
                        Thread t=Thread.currentThread();
                        System.out.println("正在执行任务，当前线程为"+t.getName());
                        Thread.sleep(5000);
                        System.out.println("任务执行完毕");
                    } catch (Exception e) {
                      e.printStackTrace();
                    }


            };
            threadPool.execute(r);
            System.out.println("将一个任务交给了线程池");
        }
        threadPool.shutdownNow();
        System.out.println("线程池关闭");
    }
}
